
You can now set your sending order in GMass — meaning you choose the order that GMass goes through the rows of contacts in your Google Sheet to send your campaign.
Before, GMass would go through your Sheet sequentially, starting with row 1 and sending to your contacts in order, until the final row.
Now, you have more control over that process.
In this guide, I’ll show you how to set your sending order. I’ll also go over some of the reasons why you might want to set a sending order for deliverability, consistency, better A/B test results, and more.
How to Set Your Sending Order in GMass
You set your sending order in the GMass dashboard.
Click on the gear icon to open the Settings panel. Then click into the Sending section.

You can now choose your sending order from the dropdown.
Your options are:
- Default – GMass’s standard method, going through your Google Sheet’s rows in numerical order.
- Randomize – Random order.
- Reversed – From the last row in the Sheet sequentially up to the first.
- Alphabetical – Alphabetical order by email address.

Note: Because this option is in the GMass dashboard, it’s an account-level setting. That means whatever you choose here will apply to all campaigns you send going forward.
If you’d like to change this for an individual campaign, you’ll need to come back to the dashboard to do so; there’s no single campaign override in the settings box.
Why You Might Want to Set a Sending Order
There are plenty of reasons why you might want to change up the send order.
Here are four big ones.
Large campaign distribution
If you’re sending to the same list regularly, and it’s a large list that’s exceeding Gmail’s daily sending limit, it may be (1) broken up across multiple days or (2) sent via SMTP once you hit the limit.
If your campaigns are broken up across multiple days, that means the same people are likely always getting your emails days later than others. Randomizing or reversing will change that up.
Plus, if you add new contacts to your Sheet and reverse the order, now those excited new recipients will get your emails first, not last.
If you’re using SMTP to handle overages and send virtually unlimited emails, that means that (largely) the same groups are receiving the campaign through Gmail’s servers and through SMTP.
Randomizing or reversing could help add some variety to both, which has potential deliverability benefits.
Fair A/B testing
If you use A/B testing, GMass sends your variations to percentages of your list — then sends the winning variation to the remainder.
Varying up the sending order will ensure different recipients in your A/B test groups for different campaigns, which should mean more accurate (or, at least, more diversified) results.
Better list blending
Maybe you’re pulling together multiple groups of recipients into your Google Sheet for a campaign. For instance, you have a list of engaged customers and a list of lapsed customers.
But… if all the engaged customers get the email first, your numbers will look high. Then if all the lapsed customers get it, the numbers will plummet — plus, you’re risking days of high spam report numbers. That’s not good.
By randomizing the order of the send, your email will go out to a mix of both, keeping your analytics (and spam reports) more consistent throughout the send.
Better organization
Sending in alphabetical order can help you keep groups of prospects organized as you (or your team) are adding contacts to your Google Sheet.
Rather than having to sort your Google Sheet repeatedly, you can enter contacts whenever you want and in whatever order you want — and know the emails will still go out in a predictable way.
Time to Get Started
The sending order dropdown box is LIVE now in the GMass dashboard.
If you don’t change it, you’ll continue to send to contacts based on their order on your Google Sheet.
But if you do set your sending order, your campaigns will go out in the sequence you’ve chosen (random, reverse, or alphabetical).
Setting the sending order is just one of the many — many — GMass features that help you fine-tune how your campaign goes out.
A small sample of some others:
- Throttling, to set pauses between emails.
- MultiSend, to distribute your campaign across multiple sending addresses.
- Delivery routes, to help get your campaigns sent properly to difficult servers.
- Send as replies, where you can send new campaigns are replies to past correspondence.
- Every possible option to handle and break Gmail’s daily sending limits.
- And so many more.
To give GMass’s sending features a try, just install the Chrome extension. You’ll start a free trial — no credit card required — where you can test out all of GMass’s features.
Come see why almost 400,000 emailers have given GMass an average rating of 4.8 out of 5 stars across 10,000+ reviews — and why they rely on GMass every day to send every possible type of email.
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